Ok, you're doing NaNoWriMo. You need to write ~1667 words a day. You sit down at the computer and begin to type. You know the approximate aim of your story and the goal of that particular chapter. You know the stakes.
And the words start flowing. Onto the page they go. It's like there's a perfect link between the story in your head and the keyboard. The words are just flying out, no trouble at all. Your word count is inching up and up. You're not sure whether you're going to hit that 50K goal, but you're feeling like it's a possibility. Your chapter is getting kind of long, but you shrug it off and move on.
You do not read what you've written. You put on your editing blinders and they focus your vision so tight that you can see only the one word that comes after the next.
It gets hypnotic. One word after another. You start to wonder if this is turning into something else. Not writing exactly, more like automatic writing. You're almost disassociated from what it is that you're putting down on the page. You have to be if you want to avoid that delete key and hit that word goal.
You start to doubt. Maybe, you're not only writing a bad story, you're not even writing coherent sentences. You lift the editing blinders for just a moment. Not long enough to get harsh with yourself, but long enough to notice that you're reusing certain words fairly often in each paragraph. That's worrisome.
You pause and ask yourself, is this really the best way to write a novel? Will you have to go back and re-write everything? Would that be ok?
These are the thoughts that go through my head as I work on NaNoWriMo. But I also know that my usual method of writing (slow, meticulous word-choice, laboring days over a paragraph) tends to turn my fiction into purple prose. This is why I'm giving the speed-drafting method a shot. I'm going to trust in NaNoWriMo for the moment and reassess later. It will be a grand writing experiment.
Do you ever have NaNoWriMo doubts?